(01-13) 17:24 PST SAN FRANCISCO -- A San Jose woman who was charged three years ago in connection with a fatal San Francisco nightclub brawl, but later saw the charge dropped, was arrested again after new details of the 2011 fight came to light, authorities said Monday.

Tracy Luong, 25, was booked Sunday on suspicion of involuntary manslaughter, assault with a deadly weapon and battery in connection with the death of 30-year-old UC San Francisco medical student Joe Hernandez on Jan 9, 2011.

Authorities said Luong helped Richmond resident Dung Minh Nguyen, 36, kill Hernandez by attacking another man who tried to intervene in the early morning melee at the Temple Nightclub on Howard Street near First Street. Nguyen was arrested Thursday on suspicion of similar charges.

Luong was first arrested in May 2011 and charged with assaulting the man who tried to intervene. Because the victim left the country, however, the charge was dropped, authorities said. New information led to last week's arrest of Nguyen as well as stiffer charges against Luong, authorities said.

Hernandez, a fourth-year student, was knocked unconscious during the brawl and later pronounced brain dead. A second fight occurred at the nightclub about 35 minutes after the initial incident, sending two others to the hospital.